1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.util;
24  
25  import com.liferay.portal.kernel.util.StringUtil;
26  
27  import java.util.ArrayList;
28  import java.util.Iterator;
29  import java.util.LinkedHashMap;
30  import java.util.List;
31  import java.util.Map;
32  
33  /**
34   * <a href="ContextReplace.java.html"><b><i>View Source</i></b></a>
35   *
36   * @author Brian Wing Shun Chan
37   */
38  public class ContextReplace implements Cloneable {
39  
40      public ContextReplace() {
41          this(null);
42      }
43  
44      public ContextReplace(Map<String, String> context) {
45          if (context != null) {
46              _context.putAll(context);
47  
48              _updateArrays();
49          }
50      }
51  
52      public void addValue(String key, String value) {
53          if ((key != null) && (value != null)) {
54              _context.put(key, value);
55  
56              _updateArrays();
57          }
58      }
59  
60      public String replace(String text) {
61          if (text == null) {
62              return null;
63          }
64  
65          if (_keys.length == 0) {
66              return text;
67          }
68  
69          return StringUtil.replace(text, _keys, _values);
70      }
71  
72      public Object clone() {
73          return new ContextReplace(_context);
74      }
75  
76      private void _updateArrays() {
77          List<String> keys = new ArrayList<String>();
78          List<String> values = new ArrayList<String>();
79  
80          Iterator<Map.Entry<String, String>> itr =
81              _context.entrySet().iterator();
82  
83          while (itr.hasNext()) {
84              Map.Entry<String, String> entry = itr.next();
85  
86              String entryKey = entry.getKey();
87              String entryValue = entry.getValue();
88  
89              keys.add("${" + entryKey + "}");
90              values.add(entryValue);
91          }
92  
93          _keys = keys.toArray(new String[keys.size()]);
94          _values = values.toArray(new String[values.size()]);
95      }
96  
97      private Map<String, String> _context = new LinkedHashMap<String, String>();
98      private String[] _keys = new String[0];
99      private String[] _values = new String[0];
100 
101 }